BrowserStack Software Engineer, Backend interview questions

There were two rounds 1. Machine Coding Round (2.5hrs) - Implement a log watcher function subject to certain constraints. 2. DoE (Director of Engineering) Round (45 mins) - In-depth knowledge check of backend fundamentals

I took referral from one of the employees(SDE's) Got a call from my recruiter after 2 days to schedule the drive the next day. 1st Round :- Machine Coding Round 2nd Round :- DOE Round 3rd Round :- HR Round Machine Coding and DOE happened on the same day, 3 days later Got call from HR that I have cleared both rounds, now they want to schedule the HR round after 2 days. After HR round :- Within 3 working days, got a call from recruiter that I am selected for the position (confirmed the joining date) and offer would be sent within 3-4 working days.